Start with the evidence
Find the original agreement and clarify the requested new amount, currency and basis. Keep a record of the approval required for the document change.
Work through the example
A draft for USD500 cannot become EUR500 merely by replacing the label. The recipient may be asking for a new agreement or a conversion, and those possibilities need explicit confirmation.
Make the next step clear
Retain the original draft and the agreed revision context. Check the final document’s rates, totals and wording together so an old currency label does not remain elsewhere.
Keep the source context
All exchange rates in these worked examples are fictional arithmetic inputs, not current market rates. A business must use the source, date and method appropriate to its own review and approved accounting process. Keep original currency amounts available throughout.